Aug 5 (Reuters) - Republicans seized on victories by two progressive candidates in Michigan primaries to portray Democrats as increasingly far left, with President Donald Trump labeling Michigan’s U.S. Senate nominee Abdul El-Sayed a “Communist loser.”

The swift attacks by Trump and national party officials underscored a broader effort by Republicans to ​shift the focus of November’s midterm elections from the economic concerns of voters that have weighed on Trump’s approval ratings.